UniProtKB/SwissProt variant VAR

Variant information

Variant position:

172

The position of the amino-acid change on the UniProtKB canonical protein sequence.

Type of variant:

LP/P [Disclaimer]

The variants are classified into three categories: LP/P, LB/B and US.

LP/P: likely pathogenic or pathogenic.
LB/B: likely benign or benign.
US: uncertain significance

Residue change:

From Alanine (A) to Phenylalanine (F) at position 172 (A172F, p.Ala172Phe).

Indicates the amino acid change of the variant. The one-letter and three-letter codes for amino acids used in UniProtKB/Swiss-Prot are those adopted by the commission on Biochemical Nomenclature of the IUPAC-IUB.

Physico-chemical properties:

Change from small size and hydrophobic (A) to large size and aromatic (F)

The physico-chemical property of the reference and variant residues and the change implicated.

BLOSUM score:

-2

The score within a Blosum matrix for the corresponding wild-type to variant amino acid change. The log-odds score measures the logarithm for the ratio of the likelihood of two amino acids appearing by chance. The Blosum62 substitution matrix is used. This substitution matrix contains scores for all possible exchanges of one amino acid with another:

Lowest score: -4 (low probability of substitution).
Highest score: 11 (high probability of substitution).

More information can be found on the following page

Variant description:

In PS; requires 2 nucleotide substitutions.

Any additional useful information about the variant.

Sequence information

Variant position:

172

The position of the amino-acid change on the UniProtKB canonical protein sequence.

Protein sequence length:

821

The length of the canonical sequence.

Location on the sequence:

RAPYWTNTEKMEKRLHAVPA A NTVKFRCPAGGNPMPTMRWL

The residue change on the sequence. Unless the variant is located at the beginning or at the end of the protein sequence, both residues upstream (20) and downstream (20) of the variant will be shown.

Residue conservation:

The multiple alignment of the region surrounding the variant against various orthologous sequences.

Human                         RAPYWTNTEKMEKRLHAVPAANTVKFRCPAGGNPMPTMRWL

Mouse                         RAPYWTNTEKMEKRLHACPAANTVKFRCPAGGNPTSTMRWL

Chicken                       RAPYWTHTDKMEKRLHAVPAANTVKFRCPAMGNPTPTMRWL

Xenopus laevis                RAPYWTNTEKMEKKLHAVSAANTVKLRCPARE-PHPSNEWL

Zebrafish                     RLPYWTFPEKMEKKLHAVPAANTVKFRCAAAGNPKPKMRWL

Drosophila                    GPPVF---RKELKRLQHSLSGNTVNLACPVYG--KANITWT

Sequence annotation in neighborhood:

The regions or sites of interest surrounding the variant. In general the features listed are posttranslational modifications, binding sites, enzyme active sites, local secondary structure or other characteristics reported in the cited references. The "Sequence annotation in neighborhood" lines have a fixed format:

Type: the type of sequence feature.
Positions: endpoints of the sequence feature.
Description: contains additional information about the feature.

Type	Positions	Description
Chain	22 – 821	Fibroblast growth factor receptor 2
Topological domain	22 – 377	Extracellular
Domain	154 – 247	Ig-like C2-type 2
Region	161 – 178	Heparin-binding

Literature citations

Genomic screening of fibroblast growth-factor receptor 2 reveals a wide spectrum of mutations in patients with syndromic craniosynostosis.
Kan S.-H.; Elanko N.; Johnson D.; Cornejo-Roldan L.R.; Cook J.; Reich E.W.; Tomkins S.; Verloes A.; Twigg S.R.F.; Rannan-Eliya S.; McDonald-McGinn D.M.; Zackai E.H.; Wall S.A.; Muenke M.; Wilkie A.O.M.;
Am. J. Hum. Genet. 70:472-486(2002)
Cited for: VARIANTS CS CYS-105; PRO-267; VAL-276; CYS-281; PRO-289; ARG-338; HIS-340; PHE-342; TRP-342; CYS-347; CYS-354; HIS-549 AND GLY-678; VARIANTS PS PHE-172; 252-PHE-SER-253; CYS-290; CYS-340; PRO-341; ARG-342; SER-342; CYS-375; GLY-565; ARG-641 AND GLU-663; VARIANTS APRS TRP-252 AND ARG-253; VARIANTS CS/PS PHE-278 AND TYR-342; VARIANT CRANIOSYNOSTOSIS ASN-659; VARIANTS THR-186 AND SER-315;

UniProtKB/Swiss-Prot variant pages

UniProtKB/Swiss-Prot P21802: Variant p.Ala172Phe